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The following unbalanced equation is performed in a lab.
Mg (s) + HCl (aq) --> MgCl2 (aq) + H2 (g)
If you begin with 10.0 grams of EACH reactant, how many grams of hydrogen gas should you expect to measure in your experiment? Round using the correct number of Significant figures.
to calculate the electric potentials we will use the convention that the electric potential is zero infinitely far from
A cylinder contains 28,500 ml of oxygen gas at a pressure of 1368 mm Hg and a temperature of 25 C.
If a student utilized a sample of metal that was wet an important percentage of the apparent mass of the metal would be water. Would the ensuing measured value of the heat capacity be too high or too low. Explain.
What is a probable molecular formula for product Y, and what is a probable molecular formula for X - Draw an electron-dot structure for Y, and predict the geometry around the central atom.
What is the empirical formula of the compound if Quantitative analysis of a 5.00-g sample of a gaseous compound yielded the following results: 2.00 g sulfur and 3.00 g oxygen?
the henry law constant kh for o2 in water is 5.6610-5g l-1 torr-1 at 20 degrees c. calulate the concentration of
what antibiotic woiuld you put in an agar plate to ensure that the cells of a bacterial colony contain the plasmid withou an insert? c) which phenotype will indicate the presence of plasmids that contain human DNA fragments?
What mass (in grams) of solid KCl would need to be added to 500 grams of water to make an ideal solution with a boiling point of 106.8
Calculate the following when 0.250 L of 0.259 M AgNO3 solution is mixed with 0.350 L of 0.300 M Na2CO3 solution. Ksp for Ag2CO3 is 8.46E-12. What mass of the precipitate forms. What is the concentration of Ag+ remaining in solution
The characteristic odor of pineapple is because of ethyl butyrate a compound containing carbon, hydrogen, and oxygen. Combustion of 1.39mg of ethyl butyrate produces 1.29mg of H2O and 3.16mg of CO2. Explain what is the empirical formula of the com..
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
What problems might we see if we increase the energy of the electron beam. And if we reduce the energy of the electron beam.
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